Louis, that is the expected behavior, yes, as long as all of the Models are set to have their data queried on page load, Skuid should wait until those Models are loaded to fire the "Skuid Page: Rendered" event. If this is not what's happening, then it's a bug, but another thing you can do to "ensure" that this is the case is to go into each Model's Advanced properties and ensure that "Process Model client-side" is selected.

I'm still having the issue with the map. It's affecting 11.2.11 but not 11.0.6. Exactly the same page except for the Skuid version. It really does feel to me like something's not quite right (see above link). There's definitely some weirdness. I can allow you access to the sandbox(11.2.11)/production(11.0.6) org showing the above issue if it will help diagnose?